Best way to block multiple logins/same user ?

What is the best way to block/prevent someone from logging in more than once at the same time with the same userID?
I was thinking to post to a database whenever a user logs in/out but then every time a user does this there has to be a database call to see if that user is already logged in. This solution doesn't seem to efficient or maybe it is.?? Anyone with a better solution?

I'm not sure what you mean. A user will log in, the form data will be authenticated against the db data, credentials will be stored in the session if authen was a success and sent back to login page if otherwise. I am imagining that I can put a flag field in the database LOGGED_IN with Y or N. So when user successfully authenticates I can insert a Y in the user's LOGGED_IN field and when the session gets destroyed insert a N. Does this answer your question?

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    If you have created a new Windows user account you need to log out and then log back in with your original user name. By default each Windows profile will have an independent iTunes library.
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    (I originally submitted this question under the "Mac OS X Technologies" section, but got no response. I'm submitting a duplicate here because this is where all the smart folks are! My apologies that my question is only partially related to OS X Server . . . )
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    Each developer should copy from the 'base' schema to his own the tables he requires to do his work. Give each developer select privileges on the 'base schema' tables so he cannot change them. This way, the developer can refresh his data as needed on his own. Public synonyms for the base schema tables will enable developers to only have to copy tables they wish to modify.
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  • Best Practice in maintaining multiple apps and user logins

    Hi,
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    What is the best way to set up itunes on our home network? 
    One iTunes library per person.  One iTunes account per person.
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    When the inevitable day comes when the kids get older, you will not have to come back here and post asking how all that stuff can get separated!

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    Hi all
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    csi_iea_values g,
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    csi_iea_values i,
    csi_iea_values j,
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    csi_iea_values n,
    csi_iea_values o,
    csi_iea_values p,
    csi_iea_values q,
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    csi_iea_values u,
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    csi_iea_values w,
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    AND a.instance_id = l.instance_id(+)
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  • Best way to manage multiple users and multiple devices?

    I would like some advice on the best way to manage iTunes and devices synced to it for multiple users -- Here's the scenario: I have 2 grade-school aged kids, who each have an iPod Nano and are going to get my old iPhone 3G to use as an iTouch after I upgrade my phone to the iPhone 4. In addition to my iPhone, I have a MacBook, a 30GB iPod, and a iMac. We are also looking into buying an iPad that we'll want to use (among other things) to watch movies while traveling. All music/apps/movies are currently located in my iTunes account on the iMac, and we sync via my personal @mac.com account.
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    turingtest2 wrote:
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    Hello
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